Unit 11 Practice Test: Bivariate data & graphs

1.  Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam? 

• 65
• 92
• 70
• 76

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters

Tags

CCSS.HSF.BF.A.2

The red line represents the line of best fit for the scatter plot. How many ice cream sales are expected if the temperature is 90°?

• 55
• 0
• 103
• 100

Estimate the y-intercept of the trend line by looking at the graph.

• 2
• 1.8
• 1.2
• 0

Tags

CCSS.8.EE.B.5

Which describes the scatterplot?

• As speed increases distance decreases.
• As speed increases, distance increases.
• As speed decreases distance increases.

Tags

CCSS.8.EE.B.5

 If a trend line has an equation y = 12x + 13 make a prediction when x = 9.5

• 25
• 127
• 34.5
• 121

Which is the correct data set for the dot plot?

• 1, 2, 3, 4, 5, 6, 7, 8, 9, 
• 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 7, 9
• 1, 2, 3, 4, 5, 7, 9

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What is a scatter plot?

• A graph that shows the relationship of two data sets.
• A graph drawn using rectangular bars to show how large each value is.
• A graph that shows information that is connected in some way.
• A graph that shows data changing over time.

Tags

CCSS.8.SP.A.1

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points
• To make it look like you know what you are doing

Tags

CCSS.8.EE.B.5

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.
• The more books students read, the higher their English grade.
• The fewer books students read, the higher their English grade. 
• No relationship exists between the number of books students read and their English grades. 

Tags

CCSS.HSF.LE.B.5